CN109473616B - Battery pack and electric tool system - Google Patents
Battery pack and electric tool system Download PDFInfo
- Publication number
- CN109473616B CN109473616B CN201811564236.2A CN201811564236A CN109473616B CN 109473616 B CN109473616 B CN 109473616B CN 201811564236 A CN201811564236 A CN 201811564236A CN 109473616 B CN109473616 B CN 109473616B
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- China
- Prior art keywords
- male plug
- electrode terminal
- inserted sheet
- piece
- electrode terminals
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- 238000010586 diagram Methods 0.000 description 16
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a battery pack and an electric tool system, wherein the battery pack comprises four groups of electric cores with the same voltage and eight electrode terminals which are electrically connected with the positive electrodes and the negative electrodes of the four groups of electric cores in a one-to-one correspondence manner, and the electrode terminals are arranged independently; when the battery pack is plugged with an external plugging device, the four groups of electric cores participate in the work, and three voltages are selectively output in a serial-parallel combination mode. The battery pack can selectively supply power for three electric tool systems with different rated working voltages, and is simple and convenient to operate and low in use cost.
Description
Technical Field
The invention relates to the field of power tools, in particular to a battery pack and an electric tool system.
Background
In the garden machine, power tool industry, power tools are typically driven by rechargeable battery packs, typically using a battery pack consisting of a plurality of battery cells, and driving a motor by means of electrical energy stored in the battery pack. The voltage is reduced after use, the battery pack can be detached from the electric tool, and the external charging device is used for charging the battery pack.
The electric tool usually has a rated working voltage, different electric tools often have different rated working voltages, and the output voltage of the battery pack is fixed, so that different battery packs are needed to be prepared to adapt to the electric tools with different rated working voltages, the operation is complicated, the use cost is increased, and the resource waste is caused.
In view of the above, it is necessary to design a battery pack and a power tool system to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a battery pack and an electric tool system capable of providing three different output voltages.
In order to achieve the above purpose, the invention adopts the following technical scheme: the battery pack comprises four groups of electric cores with the same voltage and electrode terminals which are electrically connected with the positive electrodes and the negative electrodes of the four groups of electric cores in a one-to-one correspondence manner, wherein the electrode terminals are arranged independently; when the battery pack is plugged with an external plugging device, the four groups of electric cores participate in the work, and three voltages are selectively output in a serial-parallel combination mode.
As a further improved technical scheme of the invention, the eight electrode terminals are arranged in two rows up and down, the four electrode terminals at the outer side are electrode terminals of two groups of electric cores, and the positive electrode terminals and the negative electrode terminals of the same group of electric cores are arranged in a diagonal relation; the remaining four electrode terminals are electrode terminals of the other two groups of battery cells, and positive and negative terminals of the same group of battery cells are arranged in a diagonal relationship.
As a further improved technical scheme of the invention, the electrode terminals positioned in the upper row are a fourth negative electrode terminal, a second negative electrode terminal, a third positive electrode terminal and a first positive electrode terminal in sequence, and the electrode terminals positioned in the lower row are a first negative electrode terminal, a third negative electrode terminal, a second positive electrode terminal and a fourth positive electrode terminal in sequence.
As a further improved technical scheme of the invention, eight electrode terminals of the four groups of battery cells are arranged in a straight line, and the eight electrode terminals are a fourth negative electrode terminal, a third negative electrode terminal, a second negative electrode terminal, a first negative electrode terminal, a second positive electrode terminal, a third positive electrode terminal, a fourth positive electrode terminal and a first positive electrode terminal in sequence.
In order to achieve the above purpose, the present invention further adopts the following technical scheme: the electric tool system comprises any one of the battery packs, and is provided with a male plug matched with the battery pack, and the male plug is matched with the electrode terminal to output one of three voltages to the electric tool system.
As a further improved technical scheme of the invention, the male plug-in unit at least comprises a first male plug-in piece and a second male plug-in piece, voltage output parts are respectively arranged on the first male plug-in piece and the second male plug-in piece, when the male plug-in piece is matched with the battery pack to output low voltage, the first male plug-in piece is connected with four electrode terminals with the same polarity, the second male plug-in piece is connected with the other four electrode terminals with the same polarity, the polarities of the electrode terminals connected with the first male plug-in piece and the second male plug-in piece are opposite, and the four groups of electric cores are in a parallel connection state.
As a further improved technical scheme of the invention, the male plug-in unit at least comprises a first male plug-in unit, a second male plug-in unit and a third male plug-in unit, wherein voltage output parts are respectively arranged on the first male plug-in unit and the second male plug-in unit, when the male plug-in unit is matched with a battery pack to output medium voltage, the first male plug-in unit is connected with two electrode terminals with the same polarity of two groups of electric cores, the second male plug-in unit is connected with two electrode terminals with the same polarity of the other two groups of electric cores, the polarity of the electrode terminal connected with the first male plug-in unit is opposite to that of the electrode terminal connected with the second male plug-in unit, and the third male plug-in unit is connected with other unconnected electrode terminals.
As a further improved technical scheme of the invention, the male plug-in unit at least comprises a first male plug-in unit, a second male plug-in unit, a third male plug-in unit and a fourth male plug-in unit, wherein voltage output parts are respectively arranged on the first male plug-in unit and the second male plug-in unit, when the male plug-in unit is matched with the battery pack to output medium voltage, the first male plug-in unit is connected with two electrode terminals with the same polarity of two groups of electric cores, the second male plug-in unit is connected with two electrode terminals with the same polarity of the other two groups of electric cores, the polarity of the electrode terminals connected with the first male plug-in unit is opposite to that of the electrode terminals connected with the second male plug-in unit, and the third male plug-in unit and the fourth male plug-in unit are respectively connected with other electrode terminals with the same polarity which are not connected.
As a further improved technical scheme of the invention, the male plug-in unit at least comprises a first male plug-in unit, a second male plug-in unit, a third male plug-in unit, a fourth male plug-in unit and a fifth male plug-in unit, wherein voltage output parts are respectively arranged on the first male plug-in unit and the second male plug-in unit, the first male plug-in unit and the second male plug-in unit are respectively connected with one electrode terminal with different polarities of the first group of electric cells and the second group of electric cells, the third male plug-in unit is used for connecting the electrode terminal with the first group of electric cells with the electrode terminal with the fourth group of electric cells, the fourth male plug-in unit is used for connecting the electrode terminal with the fourth group of electric cells with the electrode terminal with the third group of electric cells, the fifth male plug-in unit is used for connecting the electrode terminal with the second group of electric cells with the electrode terminal with the unconnected with the third group of electric cells, and the polarities of the two electrode terminals connected with the third male plug-in unit and the fifth plug-in unit are respectively different, so that the electric cells are connected in series to output high voltage.
As a further improved technical scheme of the invention, the electrode terminals are arranged in an upper row and a lower row.
As a further improved technical scheme of the invention, the electrode terminals are arranged in a single row.
According to the technical scheme, the four groups of electric cores with the same voltage are matched and inserted with different male plug-ins, so that the four groups of electric cores are connected in parallel, connected in parallel in pairs, connected in series in pairs, connected in parallel or connected in series, and can selectively output three voltages, and therefore the same battery pack can selectively supply power for three electric tool systems with different rated working voltages, operation is simple and convenient, and use cost is reduced.
Drawings
Fig. 1 is a diagram of a parallel circuit of four groups of cells according to the present invention.
Fig. 2 is a circuit diagram of four groups of cells connected in parallel and then connected in series.
Fig. 3 is a circuit diagram of four groups of cells connected in series and then connected in parallel.
Fig. 4 is a circuit diagram of four series-connected battery cells according to the present invention.
Fig. 5 is a perspective view of a battery pack according to a first embodiment of the present invention.
Fig. 6 is a plug-in diagram of a low-voltage male plug and a conductive terminal according to a first embodiment of the present invention.
Fig. 7 is a block diagram of the low-voltage male plug of fig. 6.
Fig. 8 is a plug-in diagram of a medium-voltage male plug and a conductive terminal according to a first embodiment of the present invention.
Fig. 9 is a structural view of the medium voltage male plug of fig. 8.
Fig. 10 is a block diagram of one of the medium voltage male tabs of fig. 9.
Fig. 11 is a plug-in diagram of a high-voltage male plug and a conductive terminal according to a first embodiment of the present invention.
Fig. 12 is a block diagram of the high-voltage male plug of fig. 11.
Fig. 13 is a block diagram of two of the high-voltage male tabs of fig. 12.
Fig. 14 is a perspective view of a battery pack according to a second embodiment of the present invention.
Fig. 15 is a plug-in diagram of a low-voltage male plug and a conductive terminal according to a second embodiment of the present invention.
Fig. 16 is a block diagram of the low-voltage male plug of fig. 15.
Fig. 17 is a plug-in diagram of a medium-voltage male plug and a conductive terminal according to a second embodiment of the present invention.
Fig. 18 is a structural view of the medium voltage male plug of fig. 17.
Fig. 19 is a diagram showing the insertion of a high-voltage male plug into a conductive terminal.
Fig. 20 is a block diagram of the high voltage male plug of fig. 19.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to aspects of the present invention are shown in the drawings, and other details not greatly related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 20, a power tool system includes a power tool (not shown) and a battery pack 100, 200 for providing a voltage to the power tool.
Referring to fig. 5-13, a battery pack 100 according to an embodiment of the invention includes a housing (not shown), four sets of battery cells having the same voltage and received in the housing, and a socket 110 electrically connected to the four sets of battery cells. It should be noted that the battery cell may be a single battery or other energy carriers, or may be an electrical combination of a plurality of batteries or energy carriers; the battery includes, but is not limited to, a rechargeable battery such as a lithium battery, a nickel-hydrogen battery, a cadmium-nickel battery, and the like. Rated voltage of each group of electric core is nV, and three voltages output by four groups of electric cores through series-parallel combination are respectively nV, 2nV and 4nV. In addition, the measured voltages of each set of cells are n+ -5% V, which can be regarded as equal.
The socket 110 includes a body 106 and a plurality of conductive terminals accommodated in the body 106 and disposed independently of each other. The plurality of conductive terminals include eight electrode terminals electrically connected to the positive and negative electrodes of the four groups of cells, specifically, a first positive electrode terminal 111 and a first negative electrode terminal 112 connected to the positive and negative electrodes of the first group of cells, a second positive electrode terminal 113 and a second negative electrode terminal 114 connected to the positive and negative electrodes of the second group of cells, a third positive electrode terminal 115 and a third negative electrode terminal 116 connected to the positive and negative electrodes of the third group of cells, and a fourth positive electrode terminal 117 and a fourth negative electrode terminal 118 connected to the positive and negative electrodes of the fourth group of cells. The conductive terminals further include a communication terminal 107 and a charging terminal 108 provided outside the eight electrode terminals. In particular, the communication terminal 107 and the charging terminal 108 are separately provided, so that damage to the battery pack caused by high charging voltage can be prevented, and the service life of the battery pack can be prolonged.
In the present embodiment, eight electrode terminals are arranged in two rows, and the communication terminal 107 and the charging terminal 108 are respectively arranged on both sides of the two rows of electrode terminals; the upper and lower rows of four electrode terminals positioned on the outer side are electrode terminals of two groups of electric cores, and positive and negative electrode terminals of the same group of electric cores are arranged in a diagonal relation; the remaining four electrode terminals are electrode terminals of other two groups of battery cells, and positive and negative terminals of the same group of battery cells are arranged in a diagonal relation; specifically, the electrode terminals located in the upper row are the fourth negative electrode terminal 118, the second negative electrode terminal 114, the third positive electrode terminal 115, and the first positive electrode terminal 111 in this order, and the electrode terminals located in the lower row are the first negative electrode terminal 112, the third negative electrode terminal 116, the second positive electrode terminal 113, and the fourth positive electrode terminal 117 in this order.
The electric tool is provided with a male plug matched with the battery pack 100, the male plug is matched with the eight electrode terminals to output one of three voltages to the electric tool, in addition, the male plug further comprises a communication male plug 124 and a charging male plug 125 which are matched and spliced with the communication terminal 107 and the charging terminal 108, and the communication male plug 124 and the charging male plug 125 do not participate in the output of the voltages, so that the description is omitted here.
Referring to fig. 6-7, the conductive terminals of the battery pack 100 of the present invention are engaged with a power tool (not shown) provided with a low-voltage male connector 120 in a butt-joint manner and output an nV voltage. The low-pressure male plug 120 includes two independently disposed low-pressure male tabs 121, 122, the two low-pressure male tabs 121, 122 being mounted on a base (not shown). The low-voltage male tab 121 includes two contact arms 1211, 1212 disposed opposite each other, a connection portion 1213 connecting the two contact arms 1211, 1212, and a voltage output portion 1214 connected to the contact arms 1211 and 1212, and the low-voltage male tab 122 includes two contact arms 1221, 1222 disposed opposite each other, a connection portion 1223 connecting the two contact arms 1221, 1222, and a voltage output portion 1224 connected to the contact arms 1221 and 1222.
When the socket 110 is in plug-in fit with the low-voltage male plug 120, each contact arm of the low-voltage male plug 121, 122 is respectively plugged into two electrode terminals of an upper row and a lower row, specifically, the contact arm 1211 of the low-voltage male plug 121 is simultaneously plugged into the fourth negative terminal 118 and the first negative terminal 112, and the contact arm 1212 is simultaneously plugged into the second negative terminal 114 and the third negative terminal 116. The contact arm 1221 of the low voltage male tab 122 is simultaneously mated with the third positive terminal 115 and the second positive terminal 113, and the contact arm 1222 is simultaneously mated with the first positive terminal 111 and the fourth positive terminal 118. Thus, four electrode terminals having the same polarity are connected in parallel so that four groups of cells are connected in parallel, as shown in fig. 1, and then the battery pack 100 outputs an nV voltage through the two voltage output sections 1214, 1224.
Referring to fig. 8-10, the conductive terminals of the battery pack 100 of the present invention are engaged with a power tool (not shown) provided with a mating medium voltage male plug 130 and output a voltage of 2 nV. The medium-voltage male plug 130 includes three independently disposed medium-voltage male plug pieces 131, 132, 133, and the three medium-voltage male plug pieces 131, 132, 133 are mounted on a base (not shown). The medium voltage male tab 131 includes two contact arms 1311, 1312 disposed opposite to each other, a connection portion 1313 connecting the two contact arms 1311, 1312, and a voltage output portion 1314 connected to the contact arms 1311, 1312, the contact arms 1311, 1312 being respectively plugged into the first negative terminal 112 and the third negative terminal 116. The medium-voltage male tab 132 includes two contact arms 1321, 1322 disposed opposite to each other, a connection portion 1323 connecting the two contact arms 1321, 1322, and a voltage output portion 1324 connected to the contact arms 1321 and 1322; the contact arms 1321, 1322 are respectively inserted into the second positive electrode terminal 113 and the fourth positive electrode terminal 117. The medium-voltage male tab 133 includes four contact arms 1331, 1332, 1333, 1334 arranged side by side, three connection portions 1335, 1336, 1337 connecting adjacent contact arms two by two, the contact arms 1331, 1332, 1333, 1334 being inserted in sequence with the fourth negative terminal 118, the second negative terminal 114, the third positive terminal 115, and the first positive terminal 111. When the socket 110 is plugged into the medium-voltage male plug 130, as shown in fig. 2, the four sets of electric cells are connected in parallel two by two and then connected in series to output a voltage of 2 nV.
It can be obtained by those skilled in the art that, in other embodiments, the male plug may be configured as a combination of male tabs in other forms, so that when the male plug is mated with the socket 110, the four groups of electric cores are connected in series two by two and then connected in parallel to output a voltage of 2nV, as shown in fig. 3, which is not described herein.
Referring to fig. 11-13, the conductive terminals of the battery pack 100 of the present invention are engaged with a power tool (not shown) provided with a high-voltage male connector 140 in a butt joint and output a voltage of 4 nV. The high-voltage male plug 140 includes five independently disposed high-voltage male tabs 141, 142, 143, 144, 145, the five high-voltage male tabs 141, 142, 143, 144, 145 being mounted on a base (not shown); the high-voltage male tab 141 includes a contact arm 1411 and a voltage output 1412 connected to the contact arm 1411, wherein the contact arm 1411 is plugged into the first negative terminal 112; the high-voltage male tab 145 includes a contact arm 1451, and a voltage output portion 1452 connected to the contact arm 1451, the contact arm 1451 being inserted into the fourth positive electrode terminal 117. The high voltage male tab 142 includes two oppositely disposed contact arms 1421, 1422 and a connection portion 1423 connecting the contact arms 1421, 1422, the contact arms 1421, 1422 mating with the fourth negative terminal 118, the third positive terminal 115, respectively. The high-voltage male tab 143 includes two oppositely disposed contact arms 1431, 1432 and a connection portion 1433 connecting the contact arms 1431, 1432, the contact arms 1431, 1432 being respectively plugged with the second negative terminal 114 and the first positive terminal 111. The high-voltage male tab 144 comprises two oppositely disposed contact arms 1441, 1442 and a connecting portion 1443 connecting the contact arms 1441, 1442, respectively, the contact arms 1441, 1442 being respectively plugged into the third negative terminal 116 and the second positive terminal 113. When the socket 110 is plugged into the high-voltage male connector 140, as shown in fig. 4, four sets of cells are connected in series to output a voltage of 4 nV.
Fig. 14-20 show another embodiment of the battery pack according to the present invention, which is different from the first embodiment only in the arrangement of the conductive terminals. The battery pack 200 includes a housing (not shown), four sets of cells 202, 203, 204, 205 housed in the housing, and a socket 210 electrically connected to the four sets of cells 202, 203, 204, 205. The socket 210 includes a body 206 and a plurality of conductive terminals accommodated in the body 206 and arranged independently of each other, and the plurality of conductive terminals include eight electrode terminals electrically connected to the positive and negative poles of the four groups of cells, specifically, a first positive electrode terminal 211 and a first negative electrode terminal 212 connected to the positive and negative poles of the first group of cells, a second positive electrode terminal 213 and a second negative electrode terminal 214 connected to the positive and negative poles of the second group of cells, a third positive electrode terminal 215 and a third negative electrode terminal 216 connected to the positive and negative poles of the third group of cells, and a fourth positive electrode terminal 217 and a fourth negative electrode terminal 218 connected to the positive and negative poles of the fourth group of cells. The conductive terminals further include communication terminals and charging terminals (not shown) provided outside the eight electrode terminals.
In the present embodiment, eight electrode terminals are arranged in a straight line, and a fourth negative electrode terminal 218, a third negative electrode terminal 216, a second negative electrode terminal 214, a first negative electrode terminal 212, a second positive electrode terminal 213, a third positive electrode terminal 215, a fourth positive electrode terminal 217, and a first positive electrode terminal 211 are arranged in this order from left to right.
The electric tool is provided with a male plug matched with the battery pack 200, and the male plug is matched with the eight electrode terminals to output any one of three voltages to the electric tool. The male plug-in specifically comprises the following three embodiments:
Referring to fig. 15-16, the conductive terminals of the battery pack 200 of the present invention are engaged with a power tool (not shown) having a low voltage male plug 220 in a butt joint and output an nV voltage. The low-pressure male plug 220 includes two independently disposed low-pressure male tabs 221, 222, the two low-pressure male tabs 221, 222 being mounted on a base (not shown). The low-voltage male tab 221 includes four contact arms 2211, 2212, 2213, 2214 arranged side by side, three connection parts 2215, 2216, 2217 connecting adjacent two contact arms, and a voltage output part 2218 connected to the contact arms 2211, 2212, 2213, 2214, the contact arms 2211, 2212, 2213, 2214 are plugged with the fourth negative terminal 218, the third negative terminal 216, the second negative terminal 214, and the first negative terminal 212 in order. The low-voltage male tab 222 includes four contact arms 2221, 2222, 2223, 2224 arranged side by side, three connection parts 2225, 2226, 2227 connecting two adjacent contact arms, and a voltage output part 2228 connected to the contact arms 2221, 2222, 2223, 2224, and the contact arms 2221, 2222, 2223, 2224 are plugged into the second positive terminal 213, the third positive terminal 215, the fourth positive terminal 217, and the first positive terminal 211 in order. When the socket 210 is in plug-in fit with the low-voltage male plug 220, the two low-voltage male plug 221 and 222 are respectively connected with four electrode terminals with the same polarity of the four groups of electric cores in parallel, and referring to fig. 1, the four groups of electric cores are connected in parallel to output nV voltage.
Referring to fig. 17-18, the conductive terminals of the battery pack 200 of the present invention are engaged with a power tool (not shown) provided with a butt-connected medium-voltage male plug 230 and output a voltage of 2 nV. The medium-voltage male plug 230 includes three independently arranged medium-voltage male plug blades 231, 232, 233 arranged side by side, and the medium-voltage male plug blades 231, 232, 233 are mounted on a base (not shown). The medium voltage male tab 231 includes two oppositely disposed contact arms 2311, 2312, a connection portion 2313 connecting the contact arms 2311, 2312, and a voltage output portion 2314 connected to the contact arms 2311, 2312; the contact arms 2311 and 2312 are respectively plugged with the fourth negative terminal 218 and the third negative terminal 216. The medium-voltage male tab 232 includes two contact arms 2321 and 2322 arranged opposite to each other, a connection portion 2323 for connecting the contact arms 2321 and 2322, and a voltage output portion 2324 connected to the contact arms 2321 and 2322; the contact arms 2321 and 2322 are respectively plugged with the second positive terminal 213 and the first positive terminal 211. The medium-voltage male tab 233 includes four contact arms 2331, 2332, 2333, 2334 arranged side by side, three connection portions 2335, 2336, 2337 connecting adjacent contact arms two by two, and the contact arms 2331, 2332, 2333, 2334 are inserted into the second negative electrode terminal 214, the first negative electrode terminal 212, the third positive electrode terminal 215, and the fourth positive electrode terminal 217 in this order. When the socket 210 is plugged into the medium-voltage male plug 230, as shown in fig. 2, the four sets of electric cells are connected in parallel two by two and then connected in series to output a voltage of 2 nV.
It can be obtained by those skilled in the art that, in other embodiments, the male plug may be set to be a combination of male plug sheets in other forms, so that when the male plug is in plug-in fit with the socket 210, the four groups of electric cores are connected in series two by two and then connected in parallel to output a voltage of 2nV, which is not described herein.
Referring to fig. 19-20, the conductive terminals of the battery pack 200 of the present invention are engaged with a power tool (not shown) provided with a high-voltage male connector 240 in a butt-joint manner and output a voltage of 4 nV. The high-voltage male plug comprises five independently arranged high-voltage male tabs 241, 242, 243, 244, 245, the five high-voltage male tabs 241, 242, 243, 244, 245 being mounted on a base (not shown). The high-voltage male tab 241 includes a contact arm 2411 and a voltage output portion 2412 connected to the contact arm 2411, wherein the contact arm 2411 is plugged into the fourth negative terminal 218. The high-voltage male tab 245 includes a contact arm 2451 and a voltage output 2452 connected to the contact arm 2451, and the contact arm 2451 is plugged into the first positive terminal 211. The high-voltage male tab 242 includes contact arms 2421 and 2422 and a connection part 2423 for connecting the contact arms 2421 and 2422, wherein the contact arms 2421 and 2422 are respectively plugged with the fourth positive terminal 217 and the third negative terminal 216. The high-voltage male tab 243 includes contact arms 2431, 2432 and a connecting portion 2433 connecting the contact arms 2431, 2432, the contact arms 2431, 2432 being respectively plugged with the third positive terminal 215, the second negative terminal 214. The high-voltage male tab 244 includes contact arms 2441, 2442 and a connection 2443 connecting the contact arms 2441, 2442, the contact arms 2441, 2442 being plugged with the second positive terminal 213, the first negative terminal 212, respectively. When the socket 210 is plugged into the high-voltage male connector 240, as shown in fig. 4, the four sets of electrical cells are connected in series to output a voltage of 4 nV.
In summary, according to the invention, four groups of electric cores with the same voltage are respectively matched and inserted with the low-voltage male plug-in unit, the medium-voltage male plug-in unit and the high-voltage male plug-in unit through the electrode terminals, so that the four groups of electric cores are mutually connected in parallel to output low voltage, the four groups of electric cores are connected in parallel in pairs and then connected in series or the four groups of electric cores are connected in pairs and then connected in series to output medium voltage or the four groups of electric cores are connected in series to each other to output high voltage. The battery pack can selectively supply power for three electric tools with different rated working voltages, and is simple and convenient to operate and low in use cost.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and it should be understood that the present invention should be based on those skilled in the art, and although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalents may be made to the present invention without departing from the spirit and scope of the present invention and modifications thereof should be covered in the scope of the claims of the present invention.
Claims (9)
1. A battery pack, characterized in that: the battery pack comprises a shell, four groups of battery cells with the same voltage and sockets electrically connected with the four groups of battery cells, wherein the sockets are provided with a plurality of conductive terminals which are mutually independent, the conductive terminals comprise electrode terminals which are electrically connected with the positive electrodes and the negative electrodes of the four groups of battery cells in a one-to-one correspondence manner, and the electrode terminals are mutually independent; when the battery pack is spliced with an external splicing device through the electrode terminal, the four groups of battery cells participate in work and selectively output three voltages in a serial-parallel combination mode, so that the same battery pack can selectively supply power for three electric tool systems with different rated working voltages; the series-parallel combination mode comprises that the four groups of electric cores are connected in parallel, connected in series after being connected in parallel in pairs or connected in parallel after being connected in series in pairs; the eight electrode terminals are arranged in two rows up and down, four electrode terminals at the outer side are electrode terminals of two groups of electric cores, positive electrode terminals and negative electrode terminals of the same group of electric cores are arranged in a diagonal relation, the remaining four electrode terminals are electrode terminals of the other two groups of electric cores, positive electrode terminals and negative electrode terminals of the same group of electric cores are also arranged in a diagonal relation, the electrode terminals located at the upper row are sequentially a fourth negative electrode terminal, a second negative electrode terminal, a third positive electrode terminal and a first positive electrode terminal, and the electrode terminals located at the lower row are sequentially a first negative electrode terminal, a third negative electrode terminal, a second positive electrode terminal and a fourth positive electrode terminal.
2. A battery pack, characterized in that: the battery pack comprises a shell, four groups of battery cells with the same voltage and sockets electrically connected with the four groups of battery cells, wherein the sockets are provided with a plurality of conductive terminals which are mutually independent, the conductive terminals comprise electrode terminals which are electrically connected with the positive electrodes and the negative electrodes of the four groups of battery cells in a one-to-one correspondence manner, and the electrode terminals are mutually independent; when the battery pack is spliced with an external splicing device through the electrode terminal, the four groups of battery cells participate in work and selectively output three voltages in a serial-parallel combination mode, so that the same battery pack can selectively supply power for three electric tool systems with different rated working voltages; the series-parallel combination mode comprises that the four groups of electric cores are connected in parallel, connected in series after being connected in parallel in pairs or connected in parallel after being connected in series in pairs; eight electrode terminals of the four groups of battery cells are arranged in a straight line, and the four electrode terminals are a fourth negative electrode terminal, a third negative electrode terminal, a second negative electrode terminal, a first negative electrode terminal, a second positive electrode terminal, a third positive electrode terminal, a fourth positive electrode terminal and a first positive electrode terminal in sequence.
3. A power tool system, characterized by: the electric tool system comprises the battery pack according to any one of claims 1-2, and is provided with a male plug matched with the battery pack, and the male plug is matched with the electrode terminal to output one of three voltages to the electric tool system.
4. A power tool system according to claim 3, wherein: the male plug-in unit at least comprises a first male plug-in piece and a second male plug-in piece, voltage output parts are respectively arranged on the first male plug-in piece and the second male plug-in piece, when the male plug-in piece is matched with the battery pack to output low voltage, the first male plug-in piece is connected with four electrode terminals with the same polarity, the second male plug-in piece is connected with the other four electrode terminals with the same polarity, the polarities of the electrode terminals connected with the first male plug-in piece and the second male plug-in piece are opposite, and the four groups of battery cells are in a parallel connection state.
5. A power tool system according to claim 3, wherein: the male plug-in components include first public inserted sheet, the public inserted sheet of second and the public inserted sheet of third at least, respectively be equipped with voltage output part on public inserted sheet of first public inserted sheet and the public inserted sheet of second, works as public inserted sheet cooperates with the battery package in order to export the middling pressure, two electrode terminals that two sets of electric cores of wherein have the same polarity are connected to the public inserted sheet of first, two electrode terminals that the polarity of two sets of electric cores are the same are connected to the public inserted sheet of second, electrode terminal that the public inserted sheet of first connects with electrode terminal that the public inserted sheet of second connects has the opposite polarity, the electrode terminal that other non-connects is connected to the public inserted sheet of third.
6. A power tool system according to claim 3, wherein: the male plug-in components include first public inserted sheet, the public inserted sheet of second, the public inserted sheet of third and the public inserted sheet of fourth at least, respectively be equipped with voltage output part on public inserted sheet of first public inserted sheet and the public inserted sheet of second, when public inserted sheet cooperates with the battery package in order to export the middling pressure, two electrode terminals that two sets of electric cores are the same among them are connected to the public inserted sheet of first, two electrode terminals that two sets of electric cores polarity are the same are connected to the public inserted sheet of second, electrode terminal that the public inserted sheet of first connects the polarity with electrode terminal that the public inserted sheet of second connects is opposite, the public inserted sheet of other unconnected electrode terminal that the polarity is different is connected respectively to public inserted sheet of third and fourth.
7. A power tool system according to claim 3, wherein: the male plug-in unit comprises at least a first male plug-in piece, a second male plug-in piece, a third male plug-in piece, a fourth male plug-in piece and a fifth male plug-in piece, wherein voltage output parts are respectively arranged on the first male plug-in piece and the second male plug-in piece, the first male plug-in piece and the second male plug-in piece are respectively connected with one electrode terminal with different polarities of a first group of electric cores and a second group of electric cores, the third male plug-in piece is used for connecting the electrode terminal with which the first group of electric cores are not connected with the electrode terminal with which the fourth group of electric cores are not connected with each other, the fourth male plug-in piece is used for connecting the electrode terminal with which the third group of electric cores are not connected with the electrode terminal with which the second group of electric cores are not connected with each other, and the first male plug-in piece, the fourth male plug-in piece and the fifth male plug-in piece are respectively different polarities of two electrode terminals connected with the third group of electric cores, so that the electric cores are mutually connected in series to output high voltage.
8. The power tool system according to any one of claims 4-7, wherein: the electrode terminals are arranged in an upper row and a lower row.
9. The power tool system according to any one of claims 4-7, wherein: the electrode terminals are arranged in a single row.
Priority Applications (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564236.2A CN109473616B (en) | 2018-12-20 | 2018-12-20 | Battery pack and electric tool system |
| EP19901399.6A EP3890084A4 (en) | 2018-12-20 | 2019-10-30 | Electrical energy storage apparatus and electric tool system |
| AU2019410333A AU2019410333A1 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| PCT/CN2019/114239 WO2020125213A1 (en) | 2018-12-20 | 2019-10-30 | Electrical energy storage apparatus and electric tool system |
| AU2019400237A AU2019400237A1 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| PCT/CN2019/114235 WO2020125210A1 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| EP19899127.5A EP3890144A1 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| PCT/CN2019/114237 WO2020125211A1 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| EP19900190.0A EP3890145A4 (en) | 2018-12-20 | 2019-10-30 | Energy storage device and electric tool system |
| AU2019411162A AU2019411162A1 (en) | 2018-12-20 | 2019-10-30 | Energy storage device and electric tool system |
| PCT/CN2019/114230 WO2020125209A1 (en) | 2018-12-20 | 2019-10-30 | Energy storage device and electric tool system |
| AU2019410335A AU2019410335A1 (en) | 2018-12-20 | 2019-10-30 | Electrical energy storage apparatus and electric tool system |
| EP19900431.8A EP3890146A4 (en) | 2018-12-20 | 2019-10-30 | Electric energy storage device and electric tool system |
| US17/344,940 US11855299B2 (en) | 2018-12-20 | 2021-06-10 | Electric energy storage device and electric tool system |
| US17/344,934 US20210305653A1 (en) | 2018-12-20 | 2021-06-10 | Electric energy storage device and electric tool system |
| US17/349,925 US20210313662A1 (en) | 2018-12-20 | 2021-06-17 | Electric energy storage device and electric tool system |
| US17/349,923 US20210313614A1 (en) | 2018-12-20 | 2021-06-17 | Electric energy storage device and electric tool system |
| US17/523,913 US11637347B2 (en) | 2018-12-20 | 2021-11-11 | Electric energy storage device and electric tool system |
| US17/523,915 US11641043B2 (en) | 2018-12-20 | 2021-11-11 | Electric energy storage device and electric tool system |
| US18/508,176 US20240079707A1 (en) | 2018-12-20 | 2023-11-13 | Electric energy storage device and electric tool system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564236.2A CN109473616B (en) | 2018-12-20 | 2018-12-20 | Battery pack and electric tool system |
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| Publication Number | Publication Date |
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| CN109473616A CN109473616A (en) | 2019-03-15 |
| CN109473616B true CN109473616B (en) | 2024-07-16 |
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| CN201811564236.2A Active CN109473616B (en) | 2018-12-20 | 2018-12-20 | Battery pack and electric tool system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020125213A1 (en) * | 2018-12-20 | 2020-06-25 | 常州格力博有限公司 | Electrical energy storage apparatus and electric tool system |
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| WO2018079723A1 (en) * | 2016-10-31 | 2018-05-03 | 日立工機株式会社 | Battery pack, electrical device using battery pack, and electrical device system |
| CN209200052U (en) * | 2018-12-20 | 2019-08-02 | 常州格力博有限公司 | Battery pack and electric tool system |
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|---|---|---|---|---|
| TWI511345B (en) * | 2014-04-07 | 2015-12-01 | Univ Nat Taiwan Science Tech | Energy storage apparatus |
| CN108400629B (en) * | 2014-05-18 | 2023-01-24 | 百得有限公司 | Battery pack |
| GB201621312D0 (en) * | 2016-12-15 | 2017-02-01 | 7Rdd Ltd | Multi power tool system incorporating battery pack |
| DE202017006868U1 (en) * | 2017-10-27 | 2018-08-29 | Hitachi Koki Co., Ltd. | Battery pack, electrical appliance using the battery pack and electrical appliance system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018079723A1 (en) * | 2016-10-31 | 2018-05-03 | 日立工機株式会社 | Battery pack, electrical device using battery pack, and electrical device system |
| CN209200052U (en) * | 2018-12-20 | 2019-08-02 | 常州格力博有限公司 | Battery pack and electric tool system |
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